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Compass Model 7HV Instruction Manual

Compass model 7hv model helicopter
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Summary of Contents for Compass Model 7HV

  • Page 3: Ama Information

    Model Ltd. assumes no liability for damage that could occur from the assembly and/or use/misuse of this product. Although the Atom 7HV is powered by a quiet, smooth-running electric motor, it should be assembled and operated with the same care as glow engine helicopters. When operating your Atom 7HV, please exercise caution and safety.

  • Page 4: Guidelines For Safe R/C Helicopter Flight

    Great care has been taken in filling the bags with the correct quantity of parts and hardware for each section. However, occasional mistakes happen. In the event that you find a parts shortage or are in need of technical assistance, please contact your local Compass Model parts dealer.
  • Page 5 In The Box This model is packed according to assembling steps. Do not open all the bags at one time. Open only one bag for each step of assemply when building. Frame Set Step 1 Step 2 Step 3 Tail Set Step 4 Motor Set Rotor Set...

  • Page 6: Swashplate Servo Installation

    Servo Description M2.5x10 Socket Head Bolt M2x8 Socket Head Bolt Stainless Ball M2 Nut Servo Bolt Servo Spacer M2.5x20 Socket Head Bolt Servo Nut 2.5mm Washer Use medium threadlock on all screws going into metal parts Swashplate Servo Installation The Servo installation is done without the supplied Servo Rubbers.

  • Page 7: Tail Servo Installation

    : Do not over tighten the four servo screws as it may damage the plastic parts. Tail Servo Installation Landing Gear Description M3x20 Socket Head Bolt 3mm Washer : Do not over tighten the four 3 x 5mm 3x5mm Set Screw set screws as it can damage the landing Skid Caps struts.
  • Page 8 Boom & Tail Rotor Description M3x75 Socket Head Bolt To pull the belt through the tail boom, slide a cord through 3mm Washer the boom and fix the belt very carefully at the cord. You can M3 Nylon Nut also use a strand and bend a hook at one of the ends. M3X16 Socket Head Bolt Crimping the belt damages the M3X25 Socket Head Bolt...
  • Page 9 Boom & Tail Rotor : Slide the tail boom clamp over the boom. Unscrew one of the ball links on the tail control rod. Screw it back on the control rod after installing it. : Just install the screw, struts and nut temporary without tightening them to much.
  • Page 10 Use medium threadlock on all screws going into metal parts The boom support collar (7) has one beveled side. This must face outside. Be careful when fixing the tail boom braces and arrange the collars to them. Beveled Side : Clip on the ball link on the tail control arm.
  • Page 11 Main Gear Description Use medium threadlock on all screws going into metal parts Main Shaft Clamp M2.5x10 Socket Head Bolt Main Shaft M3X30 Socket Head Bolt M3 Nylon Nut After installing the main Do not over gear, mount the main tighten the screw 11mm shaft clamp below the...
  • Page 12 Motor And Drive Tips Use medium threadlock on all screws going into metal parts Gear backlash adjustment: For smooth operation and performance, it is necessary to adjust the gear backlash properly. Excess gear backlash can cause premature gear wear and damage. Insufficient gear backlash can cause vibration, as well as overheating of the Motor and speed controller.
  • Page 13 Use blue threadlock on all screws going into metal parts. swing range : If the rubber gets older, you can increase the tension by opening the two screws in the holder and sliding it to the rear in the long holes. Adjusting the belt tensioner is pretty easy.
  • Page 14 Rotor,Washout & Swashplate Description The Jesusbolt (6) just Be careful not to M4x25 Socket Head Bolt carries the torque. overtighten the two Tighten it firm but do clamping screws (7) in M4x30 Socket Head Bolt not use to much force. the main rotor hub.
  • Page 15 Suggested Equipment Position Take some time for the wiring. Good fixing of the components and wires is important for a safe operation of your rc-equipment. Read the following wiring tips carefully. Aileron Brushless Motor Elevator Pitch Rudder 12S Battery Receiver FBL Unit Please read the manual of your FBL-Unit, transmitter and...
  • Page 16 Linkage Length & Setup Compass Model ball links are build up on Do not apply plier to resize Ball Links. Pliers could the tight side. This allows you to adjust them cause hidden damage to Ball Links and result in to your personal needs.
  • Page 17 Tail Setup At zero position, the servo arm should Adjust the linkage length so that the slider is be at 90°. Use the best fitting servo parelel to the tail case side wall. arm and read the manual of your FBL- Unit how to adjust the servo mid- position.

  • Page 18: Wiring Tips

    Wiring Tips Never use RC-components with damaged wires. Check all wires for damaged isolation and breakage. Control all servo connectors for a tight fit and be sure no wire is loose in the connector. All wires must be protected against damage through sharp edges of the carbon frame and metal parts.
  • Page 19 FBL Setup Tips Please read the manual for the current software version of your FBL-Unit carefully and follow all instructions. We can't give you any specific tips because most brands of FBL-Units change their software from time to time and your setup depends on many other factors like used blades and servos.
  • Page 20 FBL Setup Tips 2 Double check the gyro directions of your fbl unit! Incorrect gyro directions will cause a crash! Checking the swasplate and tail gyro directions is a part of the preflight check! Look at the helicopter from the side to test elevator gyro direction.
  • Page 21 Control Check The picuture below shows how the swashplate has to move in mode 1 or mode 2. Swashplate Reaction Mode 2 Mode 1 Tilt Right Tilt Left Aileron Check Tilt Backward Tilt For ward Elevator Check Ascent Swash Plate Descent Pitch Check Tail Pitch Plate...
  • Page 22 Canopy Use AB Glue Place the canopy onto the frames and mark the right position of the canopy insert. Mark the positions of the holes in the anopy on the Insert for drilling. Use a 2mm drill and drill straight through the insert.
  • Page 23 Rotor Direction & Blades When the main rotor spins clockwise the tail blades should turn clockwise as well watching the tail rotor from the tail fin side. If not, the belt is twisted and has to be corrected. Be sure that the main rotor and tail rotor blades are installed in the right direction.
  • Page 24 COMPASS MODEL (HK) LIMITED www.compassmodel.com...

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